Triffin's coefficient

The Triffin coefficient T (cross price elasticity) represents a measure of the intensity of the competitive relationships . It is defined as

${\displaystyle T={\delta x_{i} \over \delta p_{j}}*{p_{j} \over x_{i}},i\neq j}$

It indicates by how many percent the sales quantities of a product i change if the price of product j changes by one percent.

See also

• Price elasticity

Web links

• Relation of the Triffin coefficient to complementary and substitute goods - application of cross-price elasticity